Metals MCQs Aeronautical Engineering, Alloys MCQs

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Which metal is commonly used in aircraft structures due to its high strength-to-weight ratio?

a) Iron
b) Copper
c) Aluminum
d) Lead
Answer: c) Aluminum
What property of titanium makes it suitable for aerospace applications?

a) High thermal conductivity
b) High density
c) High corrosion resistance and strength
d) Low melting point
Answer: c) High corrosion resistance and strength
In aerospace engineering, which alloy is primarily used for turbine blades due to its high temperature resistance?

a) Aluminum alloy
b) Steel alloy
c) Nickel-based alloy
d) Brass alloy
Answer: c) Nickel-based alloy
Which metal is known for its exceptional wear resistance and is often used in aircraft landing gear?

a) Steel
b) Titanium
c) Brass
d) Magnesium
Answer: a) Steel
Which alloy is a combination of aluminum and copper, known for its high strength and used in aircraft structures?

a) Duralumin
b) Bronze
c) Stainless steel
d) Brass
Answer: a) Duralumin
The term “heat treatment” refers to:

a) The process of heating metal to improve its properties
b) The process of cooling metal to increase hardness
c) The process of melting metal to change its composition
d) The process of polishing metal for aesthetic purposes
Answer: a) The process of heating metal to improve its properties
Which metal is the primary component of bronze?

a) Aluminum
b) Copper
c) Nickel
d) Zinc
Answer: b) Copper
In alloy terminology, “age hardening” is used to describe:

a) The process of improving an alloy’s hardness through heat treatment
b) The process of making an alloy more malleable
c) The process of increasing the alloy’s electrical conductivity
d) The process of making the alloy more resistant to corrosion
Answer: a) The process of improving an alloy’s hardness through heat treatment
Which of the following alloys is commonly used for its high strength and corrosion resistance in aircraft applications?

a) Bronze
b) Stainless steel
c) Lead alloy
d) Tin alloy
Answer: b) Stainless steel
Which metal is known for its low density and is often used in aerospace for its lightweight properties?

a) Iron
b) Copper
c) Magnesium
d) Nickel
Answer: c) Magnesium
What is the primary alloying element in stainless steel?

a) Nickel
b) Copper
c) Zinc
d) Lead
Answer: a) Nickel
Which alloy is primarily used in aircraft engines and high-temperature applications due to its excellent thermal stability?

a) Aluminum-bronze
b) Nickel-chromium alloy
c) Zinc-aluminum alloy
d) Copper-tin alloy
Answer: b) Nickel-chromium alloy
In metallurgy, “ductility” refers to:

a) The ability of a metal to withstand tensile stress without breaking
b) The ability of a metal to resist corrosion
c) The ability of a metal to conduct electricity
d) The ability of a metal to resist deformation under compressive stress
Answer: a) The ability of a metal to withstand tensile stress without breaking
Which of the following metals is known for its high electrical conductivity and is used in electrical connections?

a) Aluminum
b) Iron
c) Copper
d) Titanium
Answer: c) Copper
Which alloy is often used for its high fatigue resistance in aircraft components?

a) Bronze
b) Steel alloy
c) Aluminum alloy
d) Lead alloy
Answer: c) Aluminum alloy
Which metal is known for its high melting point and is often used as a refractory material?

a) Tungsten
b) Lead
c) Tin
d) Zinc
Answer: a) Tungsten
“Corrosion resistance” in metals refers to:

a) The ability to withstand degradation due to environmental exposure
b) The ability to resist electrical conductivity
c) The ability to maintain high temperature stability
d) The ability to resist deformation under stress
Answer: a) The ability to withstand degradation due to environmental exposure
Which alloy is used for its high resistance to wear and tear in aerospace applications?

a) Brass
b) Bronze
c) Stainless steel
d) Duralumin
Answer: c) Stainless steel
“Heat treatment” processes for metals include:

a) Annealing, quenching, and tempering
b) Melting, casting, and forging
c) Polishing, plating, and coating
d) Cutting, drilling, and welding
Answer: a) Annealing, quenching, and tempering
Which of the following is a primary alloying element in high-speed steel?

a) Carbon
b) Nickel
c) Molybdenum
d) Lead
Answer: c) Molybdenum
The term “alloy” refers to:

a) A mixture of two or more metals
b) A single pure metal
c) A non-metallic compound
d) A combination of metal and plastic
Answer: a) A mixture of two or more metals
Which of the following alloys is used in aerospace for its high strength and ability to withstand extreme temperatures?

a) Titanium-aluminum alloy
b) Copper-silver alloy
c) Brass alloy
d) Lead-tin alloy
Answer: a) Titanium-aluminum alloy
“Tensile strength” of a metal measures:

a) The maximum stress a metal can withstand while being stretched or pulled before breaking
b) The ability of a metal to resist compression forces
c) The maximum temperature a metal can endure
d) The ability of a metal to conduct electricity
Answer: a) The maximum stress a metal can withstand while being stretched or pulled before breaking
Which metal is commonly used for its high resistance to oxidation at elevated temperatures?

a) Aluminum
b) Iron
c) Titanium
d) Lead
Answer: c) Titanium
Which of the following is a common application of magnesium alloys in aerospace?

a) Aircraft engine components
b) Aircraft structural components
c) Aircraft landing gear
d) Aircraft fuel tanks
Answer: b) Aircraft structural components
The primary alloying element in “brass” is:

a) Zinc
b) Tin
c) Nickel
d) Chromium
Answer: a) Zinc
“Malleability” in metals refers to:

a) The ability to be deformed under compressive stress without breaking
b) The ability to resist tensile stress
c) The ability to conduct heat
d) The ability to resist corrosion
Answer: a) The ability to be deformed under compressive stress without breaking
Which metal is used in aerospace applications for its low thermal expansion coefficient?

a) Aluminum
b) Iron
c) Titanium
d) Copper
Answer: c) Titanium
Which of the following alloys is known for its excellent resistance to seawater corrosion?

a) Aluminum-bronze alloy
b) Stainless steel alloy
c) Nickel-copper alloy
d) Lead alloy
Answer: c) Nickel-copper alloy
Which metal is used primarily in applications requiring high hardness and wear resistance?

a) Steel
b) Copper
c) Magnesium
d) Aluminum
Answer: a) Steel
“Forging” is a metalworking process involving:

a) Shaping metal using compressive forces
b) Melting metal and pouring it into molds
c) Joining metal pieces using heat
d) Cutting metal using high-speed tools
Answer: a) Shaping metal using compressive forces
“Annealing” is a heat treatment process used to:

a) Reduce hardness and increase ductility
b) Increase hardness and strength
c) Improve electrical conductivity
d) Reduce thermal expansion
Answer: a) Reduce hardness and increase ductility
Which alloy is used for its excellent strength-to-weight ratio and corrosion resistance in aerospace structures?

a) Duralumin
b) Bronze
c) Brass
d) Stainless steel
Answer: a) Duralumin
Which of the following is an example of a superalloy used in high-temperature aerospace applications?

a) Inconel
b) Bronze
c) Brass
d) Aluminum alloy
Answer: a) Inconel
Which of the following metals is most commonly used for electrical wiring due to its high electrical conductivity?

a) Aluminum
b) Iron
c) Copper
d) Zinc
Answer: c) Copper
Which metal has the highest melting point among the following?

a) Iron
b) Titanium
c) Tungsten
d) Nickel
Answer: c) Tungsten
Which alloy is commonly used in aerospace applications due to its high tensile strength and good fatigue resistance?

a) 2024 aluminum alloy
b) 316 stainless steel
c) 6061 aluminum alloy
d) 4130 steel alloy
Answer: a) 2024 aluminum alloy
“Casting” is a manufacturing process that involves:

a) Pouring molten metal into a mold to solidify
b) Shaping metal using compressive forces
c) Joining metal pieces using heat
d) Cutting metal using high-speed tools
Answer: a) Pouring molten metal into a mold to solidify
Which of the following alloys is known for its high resistance to fatigue and is often used in aircraft engine components?

a) Nickel-based superalloy
b) Aluminum alloy
c) Stainless steel
d) Brass
Answer: a) Nickel-based superalloy
Which of the following metals is most commonly used in aerospace applications for its high strength and light weight?

a) Steel
b) Aluminum
c) Copper
d) Lead
Answer: b) Aluminum
Which metal is known for its ability to withstand high temperatures and is used in jet engines and gas turbines?

a) Titanium
b) Copper
c) Zinc
d) Lead
Answer: a) Titanium
Which alloy is commonly used in aerospace for its high strength and resistance to high temperatures?

a) Inconel
b) Bronze
c) Brass
d) Zinc-aluminum alloy
Answer: a) Inconel
“Hardness” in metals is a measure of:

a) Resistance to deformation
b) Electrical conductivity
c) Thermal expansion
d) Ductility
Answer: a) Resistance to deformation
Which metal is often used for its excellent machinability and corrosion resistance?

a) Aluminum
b) Steel
c) Brass
d) Titanium
Answer: c) Brass
Which alloy is known for its ability to retain strength at high temperatures?

a) Titanium-aluminum alloy
b) Stainless steel
c) Zinc-aluminum alloy
d) Lead-tin alloy
Answer: a) Titanium-aluminum alloy
Which of the following metals is used in aerospace applications due to its high strength and resistance to corrosion and fatigue?

a) 7075 aluminum alloy
b) 304 stainless steel
c) 1018 steel
d) 2024 aluminum alloy
Answer: d) 2024 aluminum alloy
“Alloying” is the process of:

a) Mixing two or more metals to enhance properties
b) Melting a metal to change its composition
c) Heating a metal to improve its ductility
d) Coating a metal for aesthetic purposes
Answer: a) Mixing two or more metals to enhance properties
Which metal is most commonly used in aircraft wheels and brake systems due to its high strength and heat resistance?

a) Steel
b) Aluminum
c) Magnesium
d) Titanium
Answer: a) Steel
Which of the following is a characteristic of high-strength low-alloy (HSLA) steel?

a) Enhanced strength and toughness
b) High thermal conductivity
c) High corrosion resistance
d) Low density
Answer: a) Enhanced strength and toughness
Which of the following metals is known for its use in bearings and bushings due to its low friction properties?

a) Bronze
b) Brass
c) Aluminum
d) Stainless steel
Answer: a) Bronze

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